Frictional locking-hinge.



No. 64!,665. Patented Ian. 23, I900;

F. H. BASSETT. FRIOTIONAL LOCKING HINGE.

(Application filed Apr. 11, 1899.) (No Modal.)

r gf -q- FRED I1. BASSETT, OF VVATERBURY, CONNECTICUT.

FRICTIONAL LOCKING-HINGE.

sPnormoArIoN forming part of Letters Patent No. 641,665, dated January 23, 1900.

Application filed April 11, 1899. Serial No. 712,585. (No model.)

To all 'whom it may concern.-

Be it known that I, FRED I-I. BASSETT, a citizen of the United States, and a resident of Waterbury, in the county of New Haven and State of Connecticut, have invented a certain new and useful Improvement in FrictionalLocking-Hinges, of which the following is a specification.

My invention relates to a frictional locking hinge especially adapted for window-blinds, doors 850., its object being to maintain and lock the blind or door in any desired position.

To enable others to understand my invention, reference is had to the accompanying drawings, in which- Figure 1 represents a reduced broken lower section of a blind and the window-casing, showing the blind closed and locked. Fig. 2 is an enlarged detail inside view of a section of the lower part or rail of a window-blind with the operating-lever of the locking device in the position it will assume when the blind is locked. Fig. 3 is an enlarged detail outside view of a section of a blind and window-casing, showing the movable member of the locking-hinge pivotally supported on a stationary member on the casing with one of the legs of said movable member secu red to the lower rail of the blind. Fig.4 is a sectional enlarged View of the lower rail of the blind and the casing through line aof Fig. 1. Fig. 5 is a detail plan view of the movable member of the lockinghinge. Fig. 6 is a detail plan view of the movable member of the hinge, showing a brass bushing therein. Fig. 7 is a detail elevation of the stationary member of the hinge.

Its construction and operation are as follows:

1 represents the inner stile of the blind, and 2 the lower rail.

3 is the Window-casing. At the lower end of said casing, where the ordinary blind-hinge is attached, is secured the stationary member or bracket 4. 5 is a large stud integral with and projecting upward from the horizontal leg 4 of said bracket to support the movable member of the hinge.

6 is the head portion of the movable memher, having the circular split bearing 7, adapted to encircle the stud 5. 8 is an opening in the side of the said head to enable the said bearing to be contracted or expanded.

0 is the long leg of the movable member, which is secured to the outer surface of the rail 2, Fig. 3, by the screws 10.

11 is a hub integral with said leg, which hub enters a hole formed through the lower rail of the blind and provided with a camface to meet and engage with the cam-face of the hub 12 of the locking-lever 13 on the inside of the rail 2, the meeting faces of the two hubs 11 and 12 being midway of the rail 2.

14: is a bolt passing through the lockinglever and rail of the blind, whose threaded end engages in a threaded hole of the'short leg 15 of said movable member.

In most cases the hinge will be made ofiron, and to prevent rusting on its pivotal support the split bushing 7 is inserted within the pivotal bearing of the hinge, as shown at Figs. 4 and 6.

When it is desired to lock the blind either open or closed or in any intermediate position, the handle-lever 13 is placed horizontal, as shown. Turning said handle-lever will, by

reason of the engagementof the cam-faces of the hubs 11 and 12, draw the short leg 15 of the movable member inward, and thus cause sufficient contraction of the hinge-bearing about the stud 5 to produce the necessary friction to retain the blind in any position desired. This stored-up tension in the short leg 15 will exert itself outward and release the grip on the stud 5 just as soon as the bandle-lever is thrown into the vertical position, as shown in dotted lines at Fig. 2. The stops l6 and 17 of the hubs 11 and 12 serve to limit the vertical position of the looking-lever. Any perceptible wear of the cam-faces or other movable parts is taken up by simply screwing the bolt 14 farther into the short leg of the hinge.

On either inside or outside doors this hinge would prove of great advantage, as it is often desirable to have a door opened a little distance to insure a good circulation of air. In car-doors also it is necessary to keep the door open in very Warm weather, which can readily be done by this style of binge.-

It will readily be seen from the above description that my combined hinge and lock possesses superior advantages over the present manner of fastening window-blinds. With my improved hinge the unsightly catches on the outer surface of the house, window-sill, and blind can be entirely dispensed with. Besides, with my locking-hinge the blind can be rigidly held in any position, either open or closed, or in anyintermediate position between these extremes, and when locked is a perfect antirattler.

The upper hinge of the blind can be of the ordinary construction, as it is only necessary to apply one of my said locking-hinges to a blind.

The advantage which my improved hinge has over others of its class is that the handlelever affords an ample leverage, which, combined with the cam-faces of the two hubs, enables a grip to be applied to the stud on the stationary part of the hinge that will maintain the blind in any position.

When the locking-hinge is applied to iron shutters of warehouses, a locking-lever could also be mounted on the outer projecting end of the bolt 14;, so that in case of fire the shuttencan be opened from the outside.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The herein-described frictional lockinghinge,consisting of a bracket carrying a stud, said bracket adapted to be secured to the casing or door-frame, a movable member com prising in its construction a head portion havfaces the bearing is expanded or contracted,

for the purpose set forth.

2. The herein-described frictional lockinghinge, comprising in combination, a bracket or stationary member adapted to be secured to the casing a stud on said bracket, a movable member adapted to be secured toa door or blind, a head portion having a circular split bearing adapted to embrace said stud, combined with a non-corrosive split bushing as shown, a locking-lever having a cam-face hub combined with a cam-face hub on said movable member and a binding-bolt, for the purpose set forth.

Signed at \Vaterbury, in the county of New Haven and State of Connecticut, this 18th day of March, A. D. 1899.

FRED II. BASSET".

YVitnesses:

\VILsoN H. PIERCE, STELLA K. ELsDoN. 

